Industrial Adhesives

PIB is an ideal additive for industrial adhesives due to its tackiness and water resistance. As well as improving the tack and peel strength of elastomer it also has other unique properties. KEMAT provides the largest range of viscosities combining the Polybut™ and Polybol™ Polybutenes including very narrow MW distribution for special applications. The combination of Polybut™ and Polybol™ can fine tune your adhesive. The higher the viscosity and molecular weight, the stronger the tackiness of the product.

Pressure Sensitive Adhesives (PSA)

There are two routine ways to acquire desired PSA properties using PIB:

1) an amalgamation of low- and high-molecular weight PIBs is used to obtain a balance of tack and cohesive strength. These adhesives can be easily manufactured by solution or dry blending, a particular ratio of low- to high-molecular weight PIB is needed for pressure sensitive adhesion. Generally this is about 80 wt % or less of low-molecular weight PIB. This chemistry yields PSAs with fairly mild adhesive characteristics.

2) medium- and high-molecular weight PIBs are combined with a low-molecular weight polybutene (PB). When PB is added to the PIB blend, the formulation range increases. Higher ratios of low- to high-molecular weight PIB can be used. The formulation then becomes a compromise between materials with low shear strength to highly tacky material (high quantity of PB).

PIB partially replaces tackifiers, so it is economical. Additionally, it improves the tack and peel strength of elastomer.

PSAs are formulated to stick on nearly any surface by simple contact under light pressure. PSAs have three main types of performance:

removable = ultra-removable

permanent = ultra-high adhesion

repositionability = in between

Properties

soft, viscoelastic solids

good tack

improved adhesion

safe to use

easy to handle

End User Applications

mailing labels

foil tapes

postage stamps

automotive bonding

adhesive films

fibre laminates

industrial tapes

masking and friction tapes

paper

paper laminates

safe for use in skin applications

Hot Melt Adhesives (HMA)

Hot melt adhesives are mainly 100% solids formulations based on thermoplastic polymers. At room temperature they are solid. When heated above their softening point, they are activated and become liquid, then they can be used. After application they will become solid with structural integrity. Polybutenes are fairly compatible with Ethylene Vinyl Acetate (EVA), Styrene-Butadiene-Styrene (SBS), Styrene-Isoprene-Styrene (SIS), Polyethylene (PE).

KEMAT has the largest range of viscosities combining Polybut™ (low molecular weight conventional polybutenes) and Polybol™ (medium and high molecular weight polyisobutenes).

Properties

optimal hold

superior manufacturing flexibility

lower processing costs

good adhesion and tack

increases the melt index

maintains flexibility at low temperatures

End User Applications

case and carton sealing

general packaging

greenhouse covers

book binding spine gluing

plastic labelling

glue guns

packing

binding

sanitary products, eg diapers

Hot Melt Pressure Sensitive Adhesives (HMPSA)

Polybutene is used as a liquid plasticiser and tackifier performance modifier in HMPSA formulations. The tackiness of polybutene increases as the molecular weight increases.

Polybut™ (low molecular weight conventional polybutenes) and Polybol™(medium and high molecular weight polyisobutenes) are used in the production of HMPSA.

Hot melt pressure sensitive adhesives are solid at room temperature and melt easily to provide free-flowing liquids which are applied to the bonding site. Once cooled, hot melts rapidly solidify to form strong bonds between two substrates.

Fastening tapes are widely used in many products in daily use, for example: clothing, furnishings, footwear, etc. These fastening tapes can easily be sewn, however if fastening tapes are needed to be applied to concrete, glass, metal, wood, etc, then an adhesive is required.

Properties

colourless

viscous

resistant to oxidation and hydrophobic

superior tack and peel

chemically stable

non-drying

does not form residue when thermally decomposed

increases tack

End User Applications

aircraft interiors

automotive assembly

book binding

paper labels

footwear

KEMAT is the leading European supplier of polybutenes and related products in the EMEA region.